Shuttle buses will run between both stations, making stops at Rosedale, St Clair, Davisville and Eglinton stations. Those stations will be open for connecting surface routes and fare purchases, the TTC said.
Increased service will also be provided on routes 124 and 512 between the Yonge and Spadina stretches of Line 1.
However, Summerhill station will be closed all weekend.
Additional service will also be available between Bloor-Yonge and York Mills stations for those who require a station with an elevator.